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@article{DAN_1978_239_2_a3, author = {A. D. Mednykh}, title = {Determination of the number of nonequivalent coverings over a compact {Riemann} surface}, journal = {Doklady Akademii Nauk}, pages = {269--271}, publisher = {mathdoc}, volume = {239}, number = {2}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_2_a3/} }
A. D. Mednykh. Determination of the number of nonequivalent coverings over a compact Riemann surface. Doklady Akademii Nauk, Tome 239 (1978) no. 2, pp. 269-271. http://geodesic.mathdoc.fr/item/DAN_1978_239_2_a3/